Static and Dynamic Theory for Smectic

The static equilibrium equations for SmC are precisely those given by equations (6.78), (6.79) and (6.80) in Section 6.2.3, provided w is replaced by w defined in equation (6.302). Of course, the constraints (6.3) and (6.4) must also be fulfilled. If the body forces F, G and are as specified in equation (6.81), then, as before, the balance of forces (6.78) provides an expression for the pressure p, given by equation (6.85), again with w replaced by w. As in the case for SmC liquid crystals, when this simplification is possible it means that only equations (6.79) and (6.80) (the o-equations and e-equations ) need to be considered when seeking equilibrium solutions. 

Similarly, the d3mamic equations for SmC are exactly those given by equations (6.209) to (6.214), with w replacing w. In particular, the viscous stress Uj given by equations (6.201) to (6.203) is identical for both SmC and SmC liquid crystals. Consequently, all the results, comments and discussion on the smectic C viscosities 

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